/Engine/Source/Developer/HierarchicalLODUtilities/Public/HierarchicalLODUtilities.h
Retrieves the HLOD package that is created for the given level
virtual [UPackage](API\Runtime\CoreUObject\UObject\UPackage) * RetrieveLevelHLODPackage ( const [ULevel](API\Runtime\Engine\Engine\ULevel) * InLevel, const uint32 HLODLevelIndex )